Finding the Fourth Proportional to 42,948.89, 59,251.97 and 28,806.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,948.89 : 59,251.97 = 28,806.29 : x
2. Step 2: Convert to fraction form
   42,948.89/59,251.97 = 28,806.29/x
3. Step 3: Cross multiply
   42,948.89x = 59,251.97 × 28,806.29
4. Step 4: Simplify right side
   42,948.89x = 1,706,829,430.89
5. Step 5: Solve for x
   x = 1,706,829,430.89/42,948.89
6. Step 6: Final answer
   x = 39,740.94